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https://github.com/koverstreet/bcachefs-tools.git
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70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
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/*
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* Cryptographic API.
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*
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* SHA-256, as specified in
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* http://csrc.nist.gov/groups/STM/cavp/documents/shs/sha256-384-512.pdf
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*
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* SHA-256 code by Jean-Luc Cooke <jlcooke@certainkey.com>.
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*
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* Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
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* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
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* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
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* SHA224 Support Copyright 2007 Intel Corporation <jonathan.lynch@intel.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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*/
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#include <linux/bitops.h>
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#include <linux/byteorder.h>
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#include <linux/types.h>
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#include <asm/unaligned.h>
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#include <linux/crypto.h>
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#include <crypto/internal/hash.h>
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#include <sodium/crypto_hash_sha256.h>
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static int sha256_init(struct shash_desc *desc)
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{
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crypto_hash_sha256_state *state = shash_desc_ctx(desc);
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return crypto_hash_sha256_init(state);
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}
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static int sha256_update(struct shash_desc *desc, const u8 *data,
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unsigned int len)
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{
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crypto_hash_sha256_state *state = shash_desc_ctx(desc);
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return crypto_hash_sha256_update(state, data, len);
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}
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static int sha256_final(struct shash_desc *desc, u8 *out)
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{
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crypto_hash_sha256_state *state = shash_desc_ctx(desc);
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return crypto_hash_sha256_final(state, out);
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}
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static struct shash_alg sha256_alg = {
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.digestsize = crypto_hash_sha256_BYTES,
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.init = sha256_init,
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.update = sha256_update,
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.final = sha256_final,
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.descsize = sizeof(crypto_hash_sha256_state),
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.base = {
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.cra_name = "sha256",
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.cra_flags = CRYPTO_ALG_TYPE_SHASH,
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}
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};
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__attribute__((constructor(110)))
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static int __init sha256_generic_mod_init(void)
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{
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return crypto_register_shash(&sha256_alg);
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}
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